The invention discloses a chemical reaction kettle. The chemical reaction kettle is characterized in that: the chemical reaction kettle structurally comprises a motor, a rack, a thermometer port, a sight glass, a flange, a support lug, a steam inlet, a liner, a stirring shaft, a jacket, a discharge port, a condensed water outlet, a heater, a feed port and a kettle cover, wherein the motor and therack are fixedly connected, the thermometer port and the sight glass are fixed on the kettle cover, the flange is fixedly arranged at the lower end of the kettle cover, the support lug and the steam inlet are fixedly installed on the jacket, the liner is fixedly arranged in the jacket, the stirring shaft and the motor are fixedly connected, the discharge port is fixedly arranged at the bottom endof the liner, the condensed water outlet is fixedly arranged at the bottom end of the jacket, and the feed port is fixedly arranged on the kettle cover. The reactants fully react, the crushing speed and the dissolving speed of the material are accelerated, the phenomenon of carbon deposition of the material, caused by oxidation at high temperature, is reduced, the use rate of a belt pulley of thereaction kettle is increased, the operation is simple, and the cost is low.